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Baureihe 

2 625 01

 

2 625 02 

2 625 02 i

 

Service Manual 

SOLO 

KLEINMOTOREN

 

GMBH

 

 

edition 4 dated 26.02.2018 

Seite 2 

Table of contents 

 
 

General hints and description of the engines ............................................................ 2 

Necessary tools ........................................................................................................ 4 

Disassembly of the engine ........................................................................................ 5 

Check of the individual parts ..................................................................................... 6 

4.1 

Cylinder heads .......................................................................................................... 6 

4.2 

Cylinders ................................................................................................................... 6 

4.3 

Piston and piston rings ............................................................................................. 6 

4.4 

Crankshaft ................................................................................................................ 7 

4.5 

Ignition system .......................................................................................................... 7 

4.5.1  Engines 2625 01 and 2625 02 .................................................................................. 7 
4.5.2  Troubleshooting ignition systems .............................................................................. 8 
4.5.3  Wire diagrams Iskra and ducati ignition systems ...................................................... 9 
4.6 

Engine Control Unit (ECU) ...................................................................................... 10 

4.6.1  Wire diagram ECU 2625 02 i .................................................................................. 10 
4.6.2  Wire diagram redundancy system of the engine 2625 02 i ..................................... 11 
4.7 

Carburettor .............................................................................................................. 12 

4.7.1  Specialties  MIKUNI BN 38 ..................................................................................... 12 
4.7.2  Specialties MIKUNI BN 38-34-55 ............................................................................ 13 
4.7.3  Adjustment of the carburettors ................................................................................ 14 
4.7.4  Troubleshooting at the carburettors ........................................................................ 15 
4.8 

Trouble shooting at the fuel injection system (only 2625 02 i) ................................ 16 

4.8.1  Engine does not start .............................................................................................. 16 
4.8.2  Failures during operation ........................................................................................ 16 
4.8.3  Failure memory ....................................................................................................... 16 
4.8.4  Software for the ECU .............................................................................................. 16 

Assembly of the engine ........................................................................................... 18 

Notes ....................................................................................................................... 20 

 

General hints and description of the engines 

 

This service 

– manual shall give the engine specialist necessary hints for repairs and 

overhauls for the engine and help him solving specific problems. General knowledge 
of two-stroke-engines should be present. 

 

This Service-manual is valid together with the engine-manual and the spare-parts-
list. 

 

! Attention! 

 

Because this engine is used as a certified engine for motor gliders the national 
authorizations of the specific certifying staffs must be maintained. 

 

Содержание 2 625 01

Страница 1: ...ice manual For the aircraft engines solo 2 625 01 solo 2 625 02 solo 2 625 02i solo Kleinmotoren GmbH Stuttgarter Str 41 D 71069 Sindelfingen Tel 0049 7031 3010 Fax 0049 7031 301195 Edition 4 dated Fe...

Страница 2: ...MIKUNI BN 38 12 4 7 2 Specialties MIKUNI BN 38 34 55 13 4 7 3 Adjustment of the carburettors 14 4 7 4 Troubleshooting at the carburettors 15 4 8 Trouble shooting at the fuel injection system only 262...

Страница 3: ...nt electric energy to operate the fuel injection and the ignition The take off power is 50 kW by a speed of 6 500 RPM An ECU is controlling the injected amount of fuel and the ignition timing based on...

Страница 4: ...which can be read by the software Win trijekt With this memory it can be detected if one or more values have exceeded their limits Short above the maximum engine speed the ignition is cut off The sta...

Страница 5: ...he pick ups 6 Loosen hub at the front end of the crankshaft and pull off with the suitable puller Socket wrench 19 mm Puller SOLO No 00 80 529 7 Loosen nuts at the cylinder head Socket wrench 13 mm 8...

Страница 6: ...bottom 76 mm 0 01 76 02 mm Check visually the grooves for the o rings at the top of the cylinder Check the entire cylinder for cracks or damages of the sealing surfaces Remove oil carbon deposit on th...

Страница 7: ...with generator 12 V 70 W for the engine 2 625 01 up to serial No 12 DUCATI Magneto Ignition with generator 12 V 150 W for the engine 2 625 02 from serial No 1 and for the engine 2 625 01 from serial N...

Страница 8: ...exchanged with the ones to coil 2 If the defect is moving to the other circuit the coil has to be replaced o If the defect is not moving then a coil in the stator or one of the pick ups have to be re...

Страница 9: ...ihe 2 625 01 2 625 02 2 625 02 i Service Manual SOLO KLEINMOTOREN GMBH edition 4 dated 26 02 2018 Seite 9 4 5 3 Wire diagrams Iskra and ducati ignition systems Iskra ignition system Ducati ignition sy...

Страница 10: ...30 15 31 30 31 Ground Ground 15 Switched positive Fuel pump Battery 30 Continous positive 31 Ground 4 High voltage ignition wire 31 31 Plug connection ECU 1 Ground throttle valve transducer 41 Igniti...

Страница 11: ...V IV2 IV1 31 15 4 4 IC IC Relay 15 1 2 Ignition switch 30 Ind Sensor 4 4 31 30 HV 30 HV 30 31 30 31 15 Switched positive Fuel pump Battery 30 Permanent positive 31 Ground 4 High voltage ignition wire...

Страница 12: ...as one carburetor The engine 2 625 02 has two carburetors 4 7 1 Specialties MIKUNI BN 38 The carburetor has an integrated main jet which controls about 75 of the fuel at wide open throttle This jet ca...

Страница 13: ...throttle The carburetor is adjusted by the manufacturer in a way that the needle which is accessible from outside marked H the engine can be adjusted leaner up to of a turn The needle top has a plasti...

Страница 14: ...use you then could set the carburetor too lean Engine 2 625 02 with two carburettors The carburetor adjustment is almost identical for both types The typical setting should be made first see above spe...

Страница 15: ...not accede 0 1 bars per minute If an electric fuel pump is installed the check can be conducted with this pump First remove the diaphragm cover and switch on the pump No fuel should flow out of the va...

Страница 16: ...s not reach full power Fuel pressure not sufficient Fuel filter clogged Throttle valve does not open completely Spark plugs defect Fuel pump defect 4 8 3 Failure memory The ECU has a failure memory wh...

Страница 17: ...ing starting or engine operation a failure of the speed sensor can be indicated Check sensor and wires Throttle potentiometer In idle position the value should be around 10 degrees and during full thr...

Страница 18: ...574 Two stroke oil 4 Mount other half of the crankcase plus the 4 bolts on both sides with Loctite and tighten with a torque wrench Attention On engines with double bearings mount the steel liner with...

Страница 19: ...all bolts with Loctite Torque wrench 12 Nm Loctite 270 11 Assemble flywheel Clean cone and flywheel with thinner first Torque wrench 80 Nm 12 Assemble exhaust manifold with gaskets Torque wrench 20 Nm...

Страница 20: ...Baureihe 2 625 01 2 625 02 2 625 02 i Service Manual SOLO KLEINMOTOREN GMBH edition 4 dated 26 02 2018 Seite 20 6 Notes...

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